#840B21
Closest named color: Wine Red (#7B0323). oklch(39.3% 0.15 20.2), rgb(132, 11, 33).
Aa
White text reads best on this color (10.23:1).
About this color
#840B21 is a dark, vivid red. In OKLCH its lightness is 39%, its chroma 0.150 and its hue 20°. Its hue sits on the warm side of the wheel. The nearest named color is Wine Red (#7B0323), ΔE 0.024 away. White text reads best on it, at 10.23:1.
| Hue family | Reds |
| Lightness | dark (39%) |
| Chroma | vivid (0.150) |
| Temperature | warm |
| Nearest name | Wine Red (#7B0323) |
| Black text | 2.05:1 |
| White text | 10.23:1 |
Values
| HEX | #840B21 |
| RGB | rgb(132, 11, 33) |
| HSL | hsl(349, 85%, 28%) |
| OKLCH | oklch(39.3% 0.15 20.2) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #840B21 | 10.23:1 | AAA | Lc -96.2 | Preferred for body text |
| Black text on #840B21 | 2.05:1 | Fails | Lc 12.0 | Not readable |
| #840B21 text on white | 10.23:1 | AAA | Lc 91.9 | Preferred for body text |
| #840B21 text on black | 2.05:1 | Fails | Lc -10.5 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 900.
-
Step 50
50
#FFF2F1
oklch(97.1% 0.014 22.8)
-
Step 100
100
#FFE2E1
oklch(93.6% 0.032 20.1)
-
Step 200
200
#FFCAC9
oklch(88.5% 0.06 19.6)
-
Step 300
300
#FFA4A3
oklch(80.9% 0.108 20.4)
-
Step 400
400
#FD6970
oklch(70.7% 0.181 20.1)
-
Step 500
500
#F52D4A
oklch(63% 0.23 20.3)
-
Step 600
600
#D70037
oklch(55.6% 0.223 20.1)
-
Step 700
700
#B6002D
oklch(49.1% 0.197 20.1)
-
Step 800
800
#970024
oklch(42.8% 0.172 20)
-
Step 900
900 (this color)
#840B21
oklch(39.3% 0.15 20.2)
-
Step 950
950
#4B0911
oklch(27.1% 0.096 20.6)
#840B21 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #353121 | 0.167 |
| Deuteranopia (no green cones) | #524A1D | 0.153 |
| Tritanopia (no blue cones) | #920016 | 0.031 |
| Achromatopsia (no color) | #414141 | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #840B21
#840B21
oklch(39.3% 0.15 20.2)
- #005054
#005054
oklch(39.2% 0.067 200.6)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #840B21, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Wine Red #7B0323 ΔE 0.024
- Dark Red #8B0000 ΔE 0.029
- Maroon #800000 ΔE 0.030
- Bordeaux #7B002C ΔE 0.032
- Red Wine #8C0034 ΔE 0.033
- Brick Red #8F1402 ΔE 0.040
- Blood #770001 ΔE 0.043
- Blood Red #980002 ΔE 0.048
Use #840B21 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.